Personal Computer Fixes

Unidrv.dll Errors Fix

Unidrv.dll is a file used by the default Printer Driver of Windows – an important piece of software that’s continually used to help your print out a variety of different documents on your PC. Although unidrv.dll is used to help Windows process the printer settings that are required to run, it can often cause a lot of potential issues that will prevent this file from working correctly. In order to resolve this, you should use a program that’s going to repair any of the possible problems the file, and your system, may have.

What Causes Unidrv.dll Errors?

These errors are generally caused by 3 possible causes:

  • Windows has some sort of problem with its files / settings
  • Windows is unable to properly read the unidrv.dll file
  • Your computer has conflicting printer drivers

In order to resolve the unidrv.dll errors on your PC, you have to be able to repair any of the potential causes of problems that your PC may have, which will include repairing this file, using a “registry cleaner” tool, and updating Windows.

How To Fix Unidrv.dll Errors

Step 1 – Update Windows

Since this file is a part of Windows, it’s recommended that you update your system in order to ensure that it’s able to fix any of the potential problems that it may have. To do this, you should be able to follow these steps:

  • Click “Start”
  • Click “All Programs”
  • Click “Windows Update”
  • Download All Available Updates

Step 2 – Manually Replace UniDrv.dll On Your PC

Manually replacing the unidrv.dll file is probably be the best way to repair the error.  You need to obtain a fresh copy of the dll file and register it onto your Windows system.  Follow these steps to resolve the error:

  1. Download unidrv.dll from the Internet
  2. Save the unidrv.dll file onto your computer’s hard drive
  3. Browse to c:\Windows\System32
  4. Locate the current unidrv.dll on your system
  5. Rename the current unidrv.dll to unidrvBACKUP.dll
  6. Copy & paste the new unidrv.dll into C:\Windows\System32
  7. Click Start > Run (Or search ”run” on Vista & Win7)
  8. Type “cmd” in the box that appears
  9. Type “regsvr32 unidrv.dll” on the black screen
  10. Press Enter

Step 3 – Remove Any Third-Party Printer Drivers

If you have third-party printer drivers installed on your PC, including the likes of “HP” drivers, “Epson” drivers and “Dell” drivers, it’s recommended that you get rid of them. This can be done by clicking onto “Start“, selecting “Control Panel” and then choosing “Add / Remove Programs” (XP) or “Uninstall A Program” (Win 7). This will allow you to uninstall the other printer drivers, which may be conflicting with your system, thus boosting its ability to fix any of the potential problems that your system may have.

Step 4 – Clean Out The Registry Of Windows

The registry is a common cause of unidrv.dll errors on your system, as it’s where a large list of important files & settings are kept for Windows. Unfortunately, a lot of problems cause the registry to either become damaged, corrupted or unable to process the files that it requires to run, leading to a large number of errors as a result. We’ve found one of the main causes of unidrv.dll errors, and as a result it’s recommended that you use a registry cleaner program to scan through your PC & repair any of the potential problems that it may have inside.

We recommend using a program called “RegAce System Suite” to scan through your system. This is a leading registry repair tool, which has been created to scan through your system and fix the various errors that Windows will have inside it.

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